Twin Springs

JOPLIN BRANCH· McNairy, Tennessee· Built 1977· Earth·
Significant Hazard Private

Key Takeaway

Twin Springs is classified as significant hazard in Tennessee. It was completed in 1977 and is 49 years old. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Length540 ft
Dam TypeEarth
Max Storage272 acre-ft
Normal Storage170 acre-ft
Surface Area19 acres
Drainage Area1 sq mi
Year Completed1977 (49 years old)
NID IDTN10905

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: November 20, 2019
State Regulated: Yes
Regulatory Agency: TENNESSEE SAFE DAMS PROGRAM

Ownership

SMITH, ROBERT W.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Twin Springs?

Twin Springs is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Twin Springs?

Twin Springs is owned by SMITH, ROBERT W. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Twin Springs built?

Twin Springs was completed in 1977, making it 49 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

When was Twin Springs last inspected?

Twin Springs was last inspected on November 20, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.